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Finding the Fourth Proportional to 103,672.58, 155,501.46 and 40,480.87

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Solution

The fourth proportional to 103,672.58, 155,501.46 and 40,480.87 is: 60,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.58 : 155,501.46 = 40,480.87 : x
  2. Step 2: Convert to fraction form
    103,672.58/155,501.46 = 40,480.87/x
  3. Step 3: Cross multiply
    103,672.58x = 155,501.46 × 40,480.87
  4. Step 4: Simplify right side
    103,672.58x = 6,294,833,609.56
  5. Step 5: Solve for x
    x = 6,294,833,609.56/103,672.58
  6. Step 6: Final answer
    x = 60,718.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.